As we all know there are occasions where an operators filed flight plan and anticipated routing is different to that held/expected by ATC.
How that could be?
I have seen discrepancies between the Operational Flight Plan (OFP), what our fuel load is based on, and the ATS flight plan submitted. Perhaps that's what you meant?
It's doesn't ring well if what we file with Air Traffic Services is not what you expect us to fly?
From a pilots perspective, are waypoints or the route name best/easiest (or are both equal) to confirm your planned route is the same as ATC expects?
Depends. If only a waypoint or two then say the waypoint names. I take it though you might have a country/continent wide re-routing for me. Then the route names.